Biology Test One Flashcards

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1
Q

What is the difference between light and electron microscopes and the way they produce images? What types of objects can be studied with a light microscope and an electron microscope(TEM and SEM)?

A

Light microscopes uses light to produce images whereas electron microscopes use electrons to produce an image.
Light microscopes can look at living and non living organisms. Whereas electron microscopes cannot look at living things, but they can make a 3D scan in the SEM and see details inside a dead organism with the TEM.

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2
Q

Describe the difference between an earthworm’s anatomy and that of a human(heart,lungs,eyes,movement).

A

The earth worm has five hearts.
The earthworm has no lungs, so they breath through their skin.
The earthworm doesn’t have any eyes, but they use their light sensitive cells.
The earthworm’s muscles expand and contract when the move.

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3
Q

How does a light microscope produce an image?

A

It allows light to pass through the specimen and use two lenses to form an image.

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4
Q

How does an Electron Microscope produce an image?

A

They use beams of electrons.

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5
Q

What type of objects can be studied with a SEM

A

3D

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6
Q

What type of objects can be studied with a TEM?

A

Detailed cells.

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7
Q

List 3 goals of science.

A
  1. Investigate and understand the natural world.
  2. Explain events in the natural world.
  3. To use the explanations we have to make useful predictions.
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8
Q

List 3 Characteristics of Living Things.

A
  1. Living things reproduce.
  2. Living things grow and develop.
  3. Living things respond to their environment.
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9
Q

What are two levels that are part of the Levels of organization? What are they called and what is studied in that level?

A

Biosphere: The part of earth that contains all ecosystems.
Biosphere

Organism: individual living thing.
Bison

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10
Q

Study of living things.

A

Biology

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11
Q

Proposed scientific explanation for a set of observations.

A

Hypothesis

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12
Q

Life can arise from nonliving matter.

A

Spontaneous generation.

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13
Q

Variable that is deliberately changed.

A

Manipulated variable

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14
Q

Variable that is observed and changes in response to the manipulated variable.

A

Responding Variable

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15
Q

Logical interpretation based on prior knowledge or experience.

A

Inference

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16
Q

Combination of chemical reactions through which an organism builds up or breaks down materials.

A

Metabolism

17
Q

A well-tested explanation that unites a broad range of observations.

A

Theory

18
Q

Quantitative observation?

A

Expressed by numbers obtained by counting or measuring.

19
Q

Qualitative observation?

A

Descriptive characteristics.

20
Q

Did Redi believe in spontaneous generation?

A

Yes

21
Q

The information gathered from observations.,

A

Data

22
Q

What is a controlled experiment?

A

When a hypothesis is tested by an experiment, only one variable is changed at a time. All other variables should be kept unchanged or controlled.

23
Q

How do earthworm’s reproduce?

A

Sexual reproduction, one worm has one male and female part and the other worm and the worm with the parts stick together.

24
Q

What kingdom to earthworm’s belong to?

A

Animalia the phylum Annelida